When the register allocator runs out of registers, spill a physical register around the def's and use's of the interval being allocated to make it possible for the interval to target a register and spill it right away and restore a register for uses. This likely generates terrible code but is before than aborting.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48218 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/CodeGen/SelectionDAG/ScheduleDAGRRList.cpp b/lib/CodeGen/SelectionDAG/ScheduleDAGRRList.cpp
index df57f74..0d3926f 100644
--- a/lib/CodeGen/SelectionDAG/ScheduleDAGRRList.cpp
+++ b/lib/CodeGen/SelectionDAG/ScheduleDAGRRList.cpp
@@ -768,7 +768,7 @@ void ScheduleDAGRRList::ListScheduleBottomUp() {
           // Issue expensive cross register class copies.
           MVT::ValueType VT = getPhysicalRegisterVT(LRDef->Node, Reg, TII);
           const TargetRegisterClass *RC =
-            TRI->getPhysicalRegisterRegClass(VT, Reg);
+            TRI->getPhysicalRegisterRegClass(Reg, VT);
           const TargetRegisterClass *DestRC = TRI->getCrossCopyRegClass(RC);
           if (!DestRC) {
             assert(false && "Don't know how to copy this physical register!");